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Finding the Fourth Proportional to 478,785.36, 717,957.24 and 141,705.48

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Solution

The fourth proportional to 478,785.36, 717,957.24 and 141,705.48 is: 212,492.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,785.36 : 717,957.24 = 141,705.48 : x
  2. Step 2: Convert to fraction form
    478,785.36/717,957.24 = 141,705.48/x
  3. Step 3: Cross multiply
    478,785.36x = 717,957.24 × 141,705.48
  4. Step 4: Simplify right side
    478,785.36x = 101,738,475,313.68
  5. Step 5: Solve for x
    x = 101,738,475,313.68/478,785.36
  6. Step 6: Final answer
    x = 212,492.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.